Eh, mine is pretty ghetto. We used 2 by 4 no climb wire and basically staple gunned each piece to our patio. We bought some planks and built some ramps and shelfs, and some used carpet for the floor and used cat trees from craigslist that I cleaned up adorn the inside. Also, lots of hanging mice and a mister for hot summer days. I even got a cement tray for 10 dollars to use as a pool, and it actually works really well and my male likes to lay in it to cool off. It's nowhere near as nice looking as the other ones, but it's very functional. Keeps the cats in and the predators out!